Turtleback

''Psathyrotes'' is a genus of

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

n plants in the sneezeweed tribe within the

sunflower family Asteraceae () is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger fam ...

. It contains

annual Annual may refer to: *Annual publication, periodical publications appearing regularly once per year **Yearbook **Literary annual *Annual plant *Annual report *Annual giving *Annual, Morocco, a settlement in northeastern Morocco *Annuals (band), a ...

and

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

forb A forb or phorb is a herbaceous flowering plant that is not a graminoid (grass, sedge, or rush). The term is used in botany and in vegetation ecology especially in relation to grasslands and understory. Typically, these are eudicots without woo ...

s and low

subshrub A subshrub (Latin ''suffrutex'') or undershrub is either a small shrub (e.g. prostrate shrubs) or a perennial that is largely herbaceous but slightly woody at the base (e.g. garden pink and florist's chrysanthemum). The term is often interch ...

s native to dry areas of southwestern

. Common names include turtleback, brittlestem, and fanleaf. The plants are low, densely branching, hairy, and scaly, with a

turpentine Turpentine (which is also called spirit of turpentine, oil of turpentine, terebenthine, terebenthene, terebinthine and, colloquially, turps) is a fluid obtainable by the distillation of resin harvested from living trees, mainly pines. Principall ...

-like odor. Leaves are alternate and hairy. The Latin name of the genus (from the Greek ''psathurotes'') refers to the brittleness of the stems. ;SpeciesBiota of North America Program 2013 county distribution maps
/ref> * ''

Psathyrotes annua ''Psathyrotes annua'' is a species of flowering plant in the aster family known by the common names annual psathyrotes, turtleback, or mealy rosettes. It is native to the southwestern United States and as far north as Idaho. It grows in desert an ...

'' (Nutt.) Gray (annual psathyrotes, mealy rosettes, turtleback) - CA NV UT AZ ID ** Synonyms: ''Bulbostylis annua'' Nutt. ** Annual or perennial forb * ''

Psathyrotes pilifera ''Psathyrotes'' is a genus of North American plants in the Helenieae, sneezeweed tribe within the Asteraceae, sunflower family. It contains annual plant, annual and perennial plant, perennial forbs and low subshrubs native to dry areas of southw ...

'' Gray (hairy-beast turtleback, hairybeast brittlestem) - NV UT AZ ** Annual forb * ''

Psathyrotes ramosissima ''Psathyrotes ramosissima'' is a species of flowering plant in the aster family known by the common names velvet turtleback and turtleback. It is native to the southwestern United States. Description It is a low, neatly mounded plant producing ...

'' (Torr.) Gray (velvet rosette, velvet turtleback, turtleback) - NV UT AZ CA,

Baja California Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...

Sonora Sonora (), officially Estado Libre y Soberano de Sonora (), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 ...

** Synonyms: ''Tetradymia ramosissima'' Torr. ** Annual or perennial forb or subshrub ;formerly included see ''

Peucephyllum ''Peucephyllum'' is a monotypic genus of flowering plants containing the single species ''Peucephyllum schottii''. Its common names include pygmy cedar,Psathyrotopsis ''Psathyrotopsis'' is a genus of North American plants in the tribe Bahieae within the family Asteraceae. ; Species * '' Psathyrotopsis hintoniorum'' B.L.Turner - Coahuila * '' Psathyrotopsis purpusii'' (Brandegee) Rydb. - Coahuila * '' Psathyro ...

Trichoptilium ''Trichoptilium'' is a monotypic genus in the daisy family containing the single species ''Trichoptilium incisum'', which is known by the common names yellowdome and yellowhead. Description ''Trichoptilium incisum'' grows up to tall. It sends ...

'' * ''Psathyrotes incisa'' A.Gray - ''

Trichoptilium incisum ''Trichoptilium'' is a monotypic genus in the daisy family containing the single species ''Trichoptilium incisum'', which is known by the common names yellowdome and yellowhead. Description ''Trichoptilium incisum'' grows up to tall. It sends u ...

'' (A.Gray) A.Gray * ''Psathyrotes purpusii'' Brandegee - ''

Psathyrotopsis purpusii ''Psathyrotopsis'' is a genus of North American plants in the tribe Bahieae within the family Asteraceae. ; Species * '' Psathyrotopsis hintoniorum'' B.L.Turner - Coahuila * '' Psathyrotopsis purpusii'' (Brandegee) Rydb. - Coahuila * ''Psathyrot ...

'' (Brandegee) Rydb. * ''Psathyrotes scaposa'' A.Gray - ''

Psathyrotopsis scaposa ''Psathyrotopsis'' is a genus of North American plants in the tribe Bahieae within the family Asteraceae. ; Species * '' Psathyrotopsis hintoniorum'' B.L.Turner - Coahuila * '' Psathyrotopsis purpusii'' (Brandegee) Rydb. - Coahuila * '' Psathyro ...

'' (A.Gray) H.Rob. * ''Psathyrotes schottii'' (A.Gray) A.Gray - ''

Peucephyllum schottii ''Peucephyllum'' is a monotypic genus of flowering plants containing the single species ''Peucephyllum schottii''. Its common names include pygmy cedar,ITIS report

Jepson Manual treatment''Psathyrotes ramosissima''
at Calflora {{Taxonbar, from=Q3003851 Asteraceae genera Helenieae Flora of Northern America